Patents by Inventor Yoshimasa Okamura

Yoshimasa Okamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10006564
    Abstract: A fluid control valve includes a passage block formed with a passage, a valve seat provided in the passage block, and a valve element to be brought into contact with or separated from the valve seat. The fluid control valve is configured to open and close the passage by movement of the valve element with respect to the valve seat to control a fluid. The fluid control valve further includes a shape-changeable part which changes its shape in association with the movement of the valve element. The shape-changeable part has a surface formed with a monomolecular film of fluorosilane material.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: June 26, 2018
    Assignee: CKD CORPORATION
    Inventors: Yoshimasa Okamura, Yoji Mori
  • Publication number: 20180045332
    Abstract: A fluid control valve includes a passage block formed with a passage, a valve seat provided in the passage block, and a valve element to be brought into contact with or separated from the valve seat. The fluid control valve is configured to open and close the passage by movement of the valve element with respect to the valve seat to control a fluid. The fluid control valve further includes a shape-changeable part which changes its shape in association with the movement of the valve element. The shape-changeable part has a surface formed with a monomolecular film of fluorosilane material.
    Type: Application
    Filed: August 10, 2016
    Publication date: February 15, 2018
    Applicant: CKD CORPORATION
    Inventors: Yoshimasa OKAMURA, Yoji MORI
  • Patent number: 9266288
    Abstract: A three-dimensional printing apparatus includes a shaping head to discharge a resin material, a table to retain the discharged resin material, a carriage mechanism fitted to the shaping head and moving the shaping head relative to the table, a rotatable member disposed outward of the table, a first horizontal rotary shaft rotatably supporting the table, a first motor to rotate the first horizontal rotary shaft, a second horizontal rotary shaft fitted to the rotatable member and extending in a direction perpendicular or substantially perpendicular to the first horizontal rotary shaft, a second motor to rotate the second horizontal rotary shaft so as to rotate the table, the first horizontal rotary shaft, and the first motor, along with the rotatable member, around the second horizontal rotary shaft, and a microcomputer configured or programmed to control the shaping head, the first motor, and the second motor.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: February 23, 2016
    Assignee: ROLAND DG CORPORATION
    Inventor: Yoshimasa Okamura
  • Patent number: 9056472
    Abstract: A fluid ejector includes a substrate having an exterior surface and an interior surface. A non-wetting coating can cover at least a portion of the exterior surface and can be substantially absent from the flow path. A non-wetting coating can be formed of a molecular aggregation. A precursor of a non-wetting coating may flow into a chamber at a higher temperature higher than the substrate. A non-wetting coating can be over a seed layer. An outer portion of the seed layer can have a higher concentration of water molecules or a greater density than an inner portion. The outer portion can be deposited at a ratio of partial pressure water to partial pressure matrix precursor that is higher than the ratio for the inner portion. An oxygen plasma can be applied to a seed layer on the exterior surface, and the non-wetting coating can be applied on the seed layer.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: June 16, 2015
    Assignee: FUJIFILM Corporation
    Inventor: Yoshimasa Okamura
  • Publication number: 20150110912
    Abstract: A three-dimensional printing apparatus includes a shaping head to discharge a resin material, a table to retain the discharged resin material, a carriage mechanism fitted to the shaping head and moving the shaping head relative to the table, a rotatable member disposed outward of the table, a first horizontal rotary shaft rotatably supporting the table, a first motor to rotate the first horizontal rotary shaft, a second horizontal rotary shaft fitted to the rotatable member and extending in a direction perpendicular or substantially perpendicular to the first horizontal rotary shaft, a second motor to rotate the second horizontal rotary shaft so as to rotate the table, the first horizontal rotary shaft, and the first motor, along with the rotatable member, around the second horizontal rotary shaft, and a microcomputer configured or programmed to control the shaping head, the first motor, and the second motor.
    Type: Application
    Filed: October 10, 2014
    Publication date: April 23, 2015
    Inventor: Yoshimasa OKAMURA
  • Publication number: 20140225960
    Abstract: A fluid ejector includes a substrate having an exterior surface and an interior surface. A non-wetting coating can cover at least a portion of the exterior surface and can be substantially absent from the flow path. A non-wetting coating can be formed of a molecular aggregation. A precursor of a non-wetting coating may flow into a chamber at a higher temperature higher than the substrate. A non-wetting coating can be over a seed layer. An outer portion of the seed layer can have a higher concentration of water molecules or a greater density than an inner portion. The outer portion can be deposited at a ratio of partial pressure water to partial pressure matrix precursor that is higher than the ratio for the inner portion. An oxygen plasma can be applied to a seed layer on the exterior surface, and the non-wetting coating can be applied on the seed layer.
    Type: Application
    Filed: April 17, 2014
    Publication date: August 14, 2014
    Applicant: FUJIFILM Corporation
    Inventor: Yoshimasa Okamura
  • Patent number: 8733897
    Abstract: A fluid ejector includes a substrate having an exterior surface and an interior surface. A non-wetting coating can cover at least a portion of the exterior surface and can be substantially absent from the flow path. A non-wetting coating can be formed of a molecular aggregation. A precursor of a non-wetting coating may flow into a chamber at a higher temperature higher than the substrate. A non-wetting coating can be over a seed layer. An outer portion of the seed layer can have a higher concentration of water molecules or a greater density than an inner portion. The outer portion can be deposited at a ratio of partial pressure water to partial pressure matrix precursor that is higher than the ratio for the inner portion. An oxygen plasma can be applied to a seed layer on the exterior surface, and the non-wetting coating can be applied on the seed layer.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: May 27, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Yoshimasa Okamura
  • Patent number: 8523322
    Abstract: A fluid ejector having an inner surface, an outer surface, and an orifice that allows fluid in contact with the inner surface to be ejected. The fluid ejector has a non-wetting monolayer covering at least a portion of the outer surface of the fluid ejector and surrounding an orifice in the fluid ejector. Fabrication of the non-wetting monolayer can include removing a non-wetting monolayer from a second region of a fluid ejector while leaving the non-wetting monolayer on a first region surrounding an orifice in the fluid ejector, or protecting a second region of a fluid ejector from having a non-wetting monolayer formed thereon, wherein the second region does not include a first region surrounding the orifice in the fluid ejector.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: September 3, 2013
    Assignee: FUJIFILM Dimatix, Inc.
    Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John A. Higginson, Gregory Debrabander, Paul A. Hoisington, Andreas Bibl
  • Patent number: 8262200
    Abstract: A method of forming a non-wetting coating on a fluid ejector includes applying an oxygen plasma to a substrate to form an outer portion of the substrate having a density that is greater than a density of an interior portion of the substrate and depositing a non-wetting coating on an exterior surface of the outer portion. The outer portion is less than 80 ? thick.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: September 11, 2012
    Assignee: FUJIFILM Corporation
    Inventor: Yoshimasa Okamura
  • Patent number: 8226208
    Abstract: A fluid ejector having an inner surface, an outer surface, and an orifice that allows fluid in contact with the inner surface to be ejected. The fluid ejector has a non-wetting monolayer covering at least a portion of the outer surface of the fluid ejector and surrounding an orifice in the fluid ejector. Fabrication of the non-wetting monolayer can include removing a non-wetting monolayer from a second region of a fluid ejector while leaving the non-wetting monolayer on a first region surrounding an orifice in the fluid ejector, or protecting a second region of a fluid ejector from having a non-wetting monolayer formed thereon, wherein the second region does not include a first region surrounding the orifice in the fluid ejector.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: July 24, 2012
    Assignee: FUJIFILM Dimatix, Inc.
    Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John A. Higginson, Gregory De Brabander, Paul A. Hoisington, Andreas Bibl
  • Patent number: 8128201
    Abstract: A fluid ejector having a first surface, a second surface, and an orifice that allows fluid in contact with the second surface to be ejected. The fluid ejector has a non-wetting layer exposed on at least a first surface of the fluid ejector, and a overcoat layer exposed on a second surface, the overcoat layer being more wetting than the non-wetting layer. Fabrication of this apparatus can include depositing a non-wetting layer on the first and second surfaces, masking the first surface, optionally removing the non-wetting layer from the second surface, and depositing an overcoat layer on the second surface.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: March 6, 2012
    Assignee: FUJIFILM Dimatix, Inc.
    Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John A. Higginson
  • Publication number: 20110261112
    Abstract: A fluid ejector includes a substrate having an exterior surface and an interior surface. A non-wetting coating can cover at least a portion of the exterior surface and can be substantially absent from the flow path. A non-wetting coating can be formed of a molecular aggregation. A precursor of a non-wetting coating may flow into a chamber at a higher temperature higher than the substrate. A non-wetting coating can be over a seed layer. An outer portion of the seed layer can have a higher concentration of water molecules or a greater density than an inner portion. The outer portion can be deposited at a ratio of partial pressure water to partial pressure matrix precursor that is higher than the ratio for the inner portion. An oxygen plasma can be applied to a seed layer on the exterior surface, and the non-wetting coating can be applied on the seed layer.
    Type: Application
    Filed: October 27, 2009
    Publication date: October 27, 2011
    Applicant: FUJIFILM CORPORATION
    Inventor: Yoshimasa Okamura
  • Patent number: 8038260
    Abstract: A fluid ejector is provided, having an internal surface, an external surface, an orifice that allows fluid in contact with the internal surface to be ejected, a first non-wetting region of the external surface, and one or more second regions of the external surface that are more wetting than the first non-wetting region. A process for cleaning the fluid ejectors is provided that includes detachably securing a faceplate to the fluid ejector and moving a wiper laterally across the faceplate.
    Type: Grant
    Filed: December 18, 2007
    Date of Patent: October 18, 2011
    Assignee: FUJIFILM Dimatix, Inc.
    Inventor: Yoshimasa Okamura
  • Publication number: 20110212261
    Abstract: A fluid ejector having an inner surface, an outer surface, and an orifice that allows fluid in contact with the inner surface to be ejected. The fluid ejector has a non-wetting monolayer covering at least a portion of the outer surface of the fluid ejector and surrounding an orifice in the fluid ejector. Fabrication of the non-wetting monolayer can include removing a non-wetting monolayer from a second region of a fluid ejector while leaving the non-wetting monolayer on a first region surrounding an orifice in the fluid ejector, or protecting a second region of a fluid ejector from having a non-wetting monolayer formed thereon, wherein the second region does not include a first region surrounding the orifice in the fluid ejector.
    Type: Application
    Filed: May 12, 2011
    Publication date: September 1, 2011
    Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John A. Higginson, Gregory Debrabander, Paul A. Hoisington, Andreas Bibl
  • Publication number: 20110063369
    Abstract: A method of forming a non-wetting coating on a fluid ejector includes applying an oxygen plasma to a substrate to form an outer portion of the substrate having a density that is greater than a density of an interior portion of the substrate and depositing a non-wetting coating on an exterior surface of the outer portion. The outer portion is less than 80 ? thick.
    Type: Application
    Filed: September 15, 2009
    Publication date: March 17, 2011
    Inventor: Yoshimasa Okamura
  • Publication number: 20080150998
    Abstract: A fluid ejector is provided, having an internal surface, an external surface, an orifice that allows fluid in contact with the internal surface to be ejected, a first non-wetting region of the external surface, and one or more second regions of the external surface that are more wetting than the first non-wetting region. A process for cleaning the fluid ejectors is provided that includes detachably securing a faceplate to the fluid ejector and moving a wiper laterally across the faceplate.
    Type: Application
    Filed: December 18, 2007
    Publication date: June 26, 2008
    Inventor: Yoshimasa Okamura
  • Publication number: 20080136866
    Abstract: A fluid ejector having a first surface, a second surface, and an orifice that allows fluid in contact with the second surface to be ejected. The fluid ejector has a non-wetting layer exposed on at least a first surface of the fluid ejector, and a overcoat layer exposed on a second surface, the overcoat layer being more wetting than the non-wetting layer. Fabrication of this apparatus can include depositing a non-wetting layer on the first and second surfaces, masking the first surface, optionally removing the non-wetting layer from the second surface, and depositing an overcoat layer on the second surface.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 12, 2008
    Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John A. Higginson
  • Publication number: 20070030306
    Abstract: A fluid ejector having an inner surface, an outer surface, and an orifice that allows fluid in contact with the inner surface to be ejected. The fluid ejector has a non-wetting monolayer covering at least a portion of the outer surface of the fluid ejector and surrounding an orifice in the fluid ejector. Fabrication of the non-wetting monolayer can include removing a non-wetting monolayer from a second region of a fluid ejector while leaving the non-wetting monolayer on a first region surrounding an orifice in the fluid ejector, or protecting a second region of a fluid ejector from having a non-wetting monolayer formed thereon, wherein the second region does not include a first region surrounding the orifice in the fluid ejector.
    Type: Application
    Filed: June 30, 2006
    Publication date: February 8, 2007
    Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John Higginson, Gregory Debrabander, Paul Hoisington, Andreas Bibl
  • Patent number: 6969679
    Abstract: In a method for fabricating a nanowire thermoelectric device, a first electrode pattern is formed on a substrate, wherein the first electrode pattern includes bottom electrodes and a first set of connections which connects the bottom electrodes to form first and second groups of electrically connected bottom electrodes. P-type nanowires and n-type nanowires are selectively formed on the substrate by selectively activating either the first group of electrically connected bottom electrodes and the second group. The p-type and n-type nanowires are then connected by top electrodes. A first set of holes in the substrate is formed to remove the first set of connections. A second set of holes to allow for electrical access to the bottom electrodes, and a second set of connections are formed, so as to result in an array of thermocouples connected to each other in parallel banks of series-connected thermocouples.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: November 29, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshimasa Okamura, Timothy L. Kohler
  • Patent number: 6962758
    Abstract: An organic light-emitting device (OLED) in which an iptycene derivative is used as the emissive layer and/or one or more of the charge transport layers, or as a host material for one or more of these layers.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: November 8, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jian Ping Chen, Yoshimasa Okamura